@@ -2330,13 +2330,34 @@ EXPORT_SYMBOL(drm_find_cea_extension);
*/
u8 drm_match_cea_mode(const struct drm_display_mode *to_match)
{
- struct drm_display_mode *cea_mode;
u8 mode;
+ if (!to_match->clock)
+ return 0;
+
for (mode = 0; mode < ARRAY_SIZE(edid_cea_modes); mode++) {
- cea_mode = (struct drm_display_mode *)&edid_cea_modes[mode];
+ const struct drm_display_mode *cea_mode = &edid_cea_modes[mode];
+ unsigned int clock1, clock2;
- if (drm_mode_equal(to_match, cea_mode))
+ clock1 = clock2 = cea_mode->clock;
+
+ /* Check both 60Hz and 59.94Hz */
+ if (cea_mode->vrefresh % 6 == 0) {
+ /*
+ * edid_cea_modes contains the 59.94Hz
+ * variant for 240 and 480 line modes,
+ * and the 60Hz variant otherwise.
+ */
+ if (cea_mode->vdisplay == 240 ||
+ cea_mode->vdisplay == 480)
+ clock1 = clock1 * 1001 / 1000;
+ else
+ clock2 = DIV_ROUND_UP(clock2 * 1000, 1001);
+ }
+
+ if ((KHZ2PICOS(to_match->clock) == KHZ2PICOS(clock1) ||
+ KHZ2PICOS(to_match->clock) == KHZ2PICOS(clock2)) &&
+ drm_mode_equal_no_clocks(to_match, cea_mode))
return mode + 1;
}
return 0;